Initial implementation of the gocrypt plugin

.gitignore

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+pass

gocrypt.bash

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+#!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-only
+# Copyright (C) 2022 Peter Cai <peter at typeblog dot net>
+
+readonly gocrypt_dir=".gocrypt"
+readonly gocrypt_dec_dir="gocrypt"
+readonly gocrypt_passwd_file="gocrypt-passwd"
+
+gocrypt_sys_check() {
+    which gocryptfs > /dev/null || gocrypt_die "gocryptfs not found in PATH"
+}
+
+gocrypt_env_check() {
+    gocrypt_sys_check
+    [ ! -d "$gocrypt_dir" ] && gocrypt_die "gocrypt plugin not initialized"
+}
+
+gocrypt_open_check() {
+    gocrypt_env_check
+    [ ! -f "$gocrypt_dec_dir"/.pass-gocrypt ] && gocrypt_die "gocrypt not opened"
+}
+
+gocrypt_die() {
+    printf "Error: %s\n" "$1" >&2
+    exit 1
+}
+
+gocrypt_init() {
+    gocrypt_sys_check
+    if [ -d "$gocrypt_dir" ] || [ -f "$gocrypt_dir" ]; then
+        gocrypt_die "gocrypt plugin already initialized for your password store"
+    fi
+
+    pass generate "$gocrypt_passwd_file" 32
+
+    # Initialize gocryptfs
+    mkdir "$gocrypt_dir"
+    gocryptfs -passfile /dev/stdin -init "$gocrypt_dir" <<< "$(pass show "$gocrypt_passwd_file")"
+
+    # Mount the gocryptfs subdirectory and initialze what is inside of it
+    gocrypt_open
+    touch "$gocrypt_dec_dir"/.pass-gocrypt
+    # By default, we use the same gpg-id inside, but the user can decide to use a different one later by doing it manually
+    ln -s ../.gpg-id "$gocrypt_dec_dir"/.gpg-id
+
+    # Add the decrypted path to gitignore
+    echo >> .gitignore
+    echo "# Gocrypt" >> .gitignore
+    echo "gocrypt" >> .gitignore
+
+    pass git add .gitignore
+    pass git add "$gocrypt_dir"
+    pass git commit -m "Initialized encrypted storage for gocrypt plugin"
+}
+
+gocrypt_open() {
+    gocrypt_env_check
+    mkdir -p "$gocrypt_dec_dir"
+
+    gocryptfs -passfile /dev/stdin "$gocrypt_dir" "$gocrypt_dec_dir" <<< "$(pass show "$gocrypt_passwd_file")"
+}
+
+gocrypt_close() {
+    gocrypt_open_check
+    fusermount -u "$gocrypt_dec_dir"
+}
+
+gocrypt_delegate() {
+    gocrypt_open_check
+    # Delegate command to another `pass` instance that manages what is inside of the mountpoint
+    PASSWORD_STORE_DIR="$PWD/$gocrypt_dec_dir" pass $@
+    # Commit if there has been changes due to this operation
+    pass git add "$gocrypt_dir"
+    pass git commit -m "Encrypted pass operation inside gocrypt" "$gocrypt_dir" || echo "No git commit created"
+}
+
+if [ $# -eq 0 ]; then
+    gocrypt_die "Unknown command for gocrypt"
+fi
+
+if [ ! -d "$PREFIX" ]; then
+    gocrypt_die "Cannot open password store"
+fi
+
+# cd into the password store prefix
+cd "$PREFIX"
+
+case "$1" in
+    init)
+        shift
+        gocrypt_init $@
+        ;;
+    open)
+        shift
+        gocrypt_open $@
+        ;;
+    close)
+        shift
+        gocrypt_close $@
+        ;;
+    ls|list|grep|find|search|show|insert|add|edit|generate|rm|remove|delete|mv|rename|cp|copy|git)
+        # No shift here since we need to delegate these commands to another pass instance
+        gocrypt_delegate $@
+        ;;
+    *)
+        gocrypt_die "Unknown command $1 for gocrypt"
+esac

pass-test

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+#!/usr/bin/env sh
+
+PASSWORD_STORE_DIR=$PWD/pass PASSWORD_STORE_EXTENSIONS_DIR=$PWD PASSWORD_STORE_ENABLE_EXTENSIONS=true pass $@